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Non Revenue Water (NRW)

Non revenue water (NRW) is water that has been produced and is “lost” before it reaches the customer. Losses can be real losses (through leaks, sometimes also referred to as physical losses) or apparent losses (for example through theft or metering inaccuracies). High levels of NRW are detrimental to the financial viability of water utilities, as well to the quality of water itself. NRW is typically measured as the volume of water “lost” as a share of net water produced. However, it is sometimes also expressed as the volume of water “lost” per km of water distribution network per day.(Wikipedia)

Scope Of Work Provided Under NRW Reduction Project

  • District Metered Zones (DMZ) design and construction
  • Pressure Management Area (PMA) design and construction
  • Active Leakage Detection for below-ground non-visible leaks
  • Water Balance calculations
  • Illegal usage survey and detection
  • Mapping, verification and updating
  • Geographical Information System (GIS) and Digital Mapping services
  • Leak Repairs
  • Hydraulic Modelling
  • Improvement and upgrading of District Metered Zones (DMZ)
  • Maintenance and Servicing of automatic controlled valves – pressure reducing, altitude, constant flow, surge etc.
  • Water Distribution Management System
  • NRW Assessment and Analysis